''Calochortus westonii'', common name Shirley Meadows star-tulip, is a rare endemic plant known only from the Greenhorn Mountains range of the southern Sierra Nevada, within Kern and Tulare Counties, California. It grows in open locations in meadows and woodlands at elevations of . It is vulnerable due to habitat loss from logging, development of ski resort, and fuel breaks.

Description

''Calochortus westonii'' is bulb-forming herb attaining a height of up to . Leaves are basal, persistent, and linear, up to long.

Sepals A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

are green, up to long. Petals are lanceolate, up to long, with long flexible hairs along the margins. Flowers bloom from May to June and petals are white or blue in color.

References

{{Taxonbar, from=Q15539056 westonii Endemic flora of California Flora of the Sierra Nevada (United States) Natural history of Kern County, California Natural history of Tulare County, California Taxa named by Alice Eastwood